Straight? Be A Man! Enlist!
A strict-constructionist Federal Judge in Boston, of all places, has ruled that Congress was acting rationally when it enacted the "Don't Ask, Don't Tell" policy in 1993, and the policy is therefore not unconstitutional. Of course, he also said that the mere fact that the policy is not unconstitutional does not mean that it was, or is, wise. That's why a bill to repeal "Don't Ask, Don't Tell" has over 100 co-sponsors.
If real Americans really want a 100% heterosexual military, it's time for male American heterosexuals to Be A Man! Enlist!